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luda_lava [24]
3 years ago
12

Why should you do you should

Physics
1 answer:
uranmaximum [27]3 years ago
8 0
One does not simply should you do you should
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The index of refraction for water is about 4 3 . What happens as a beam of light travels from air into water?
hjlf

Answer:

Its speed decreases.

Explanation:

When light enters into water, its speed decreases (as well as its frequency). This is the reason why refraction (the bending of light when it changes media) occurs.

This can be proven mathematically.

Given that the refractive index of water is 4/3, we know that refractive index is the ratio of the speed of light in a vacuum to the speed of light in another medium.

Therefore,

4/3 = (speed of light in vacuum) / (speed of light in water)

Speed of light in a vacuum is 3 * 10^8. Hence,

Speed of light in water is:

v = (3 * 10^8) / (4/3)

v = 2.25 * 10^8 m/s

As we can see, the speed of light decreases in water.

5 0
3 years ago
A tied ball game goes into blank innings
vlada-n [284]
Extra innings is the answer
4 0
4 years ago
Two sheets of polarizing material are placed such that their polarizing axes are 90° to each other and no light passes through t
nekit [7.7K]

Answer:

Explanation:

Polarization In this case angle of incidence is not equal to angle of polarization, hence reflected light is partially polarized and transmitted light is also partially polarized.  by reflection is explained by Brewster's law,  

According to this when unpolarized light incident on glass plate at an angle is called as angle of polarizing the reflected light is plane polarized, and transmitted light is partially polarized. The plane of vibration of polarized light is having plane of vibrations perpendicular to plane of incidence.

4 0
3 years ago
On a sunny day, you and a friend are relaxing on the grass at a park. Your find says that the sun shines while light on the park
nikitadnepr [17]

Answer:

i do agree to my friend

Explanation:

White light is absorbed by the callours that are not white. if it was white it would of been reflected. The light also helps us to see the object i.e the grass as the light is shining on it.

i hope your happy :)

7 0
3 years ago
Read 2 more answers
A tennis ball traveling at 25.0 m/s has a mass of 58.5 g and bounces off a wall with a speed of 22.5 m/s. The impact took 3.33 m
mylen [45]
<h2>Magnitude of average force is 751.52 N</h2>

Explanation:

By Newtons second law force is rate of change of momentum.

Initial momentum = Mass x initial velocity

Mass = 58.5 g = 0.0585 kg

Initial velocity = +25 m/s

Initial momentum = 0.0585 x 25 = 1.4625 kgm/s

Final momentum = Mass x Final velocity

Mass = 58.5 g = 0.0585 kg

Final velocity = -22.5 m/s

Final momentum = 0.0585 x -22.5 = -1.3163 kgm/s

Change of momentum = Initial momentum - Final momentum = 1.4625 - (-1.3163)

Change of momentum = 2.48 kgm/s

Time = 3.33 ms = 0.0033 s

\texttt{Rate of change of momentum =}\frac{2.48}{0.0033}=751.52N

Magnitude of average force is 751.52 N

4 0
3 years ago
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